Baader

Brand new 4nm F/3 Ultra Highspeed Narrowband filters by Baader. Available in Ha, Oiii and Sii in a variety of sizes.

Baader O-III Ultra-Narrowband Filter – Premium Grade. 4nm FWHM recommended for optical systems from f/10 to f/3.5. For highest contrast even at strongest light pollution, minimizes star size, emphasizes finest nebula detail

Baader S-II Ultra-Narrowband Filter – Premium Grade. 4nm FWHM recommended for optical systems from f/10 to f/3.5. For highest contrast even at strongest light pollution.

Baader S-II f/2 Ultra-Highspeed Filter – Premium Grade. 4nm FWHM, recommended for extremely fast optical systems from f/3.4 to f/1.8. Specially designed for the special filter requirements.

Brand new 4nm F/3 Ultra Highspeed Narrowband filters by Baader. Available in Ha, Oiii and Sii in a variety of sizes.

Baader O-III f/2 Ultra-Highspeed Filter – Premium Grade. 4nm FWHM, recommended for extremely. Specially designed for the special filter requirements when used with fast optics like the Celestron RASA astrographs

Increased contrast, matched for typical CMOS quantum efficiency and s/n ratio. Reflex-Blocker™ coatings, for largest ever freedom from halos, even under most adverse conditions concerning aux-optics

Baader H-alpha Ultra-Narrowband Filter – Premium Grade. 3.5nm FWHM to harmonize the exposure time from H-alpha with O-III / S-II), recommended for optical systems from f/10 to f/3.5. For highest contrast even at strongest light pollution

Brand new 4nm F/3 Ultra Highspeed Narrowband filters by Baader. Available in Ha, Oiii and Sii in a variety of sizes.

These Baader colour filters are carefully prepared for amateur astronomical use for contrast enhancement of lunar and planetary observations.

Baader H-alpha f/2 Ultra-Highspeed Filter – Premium Grade. 3.5nm FWHM (to harmonize the exposure time from H-alpha with O-III / S-II), recommended for extremely fast optical systems from f/3.4 to f/1.8

A new generation Venus filter that allows Amateurs to image fine detail on Venus for the first time. The latest coating technologies permit the Baader Venus Filter to transmit from 300nm to 400nm, with a peak transmission of 80%!

For solar work use only with 3.8 AstroSolar 200x290mm Photo Film (included). Never use any eyepiece filter for solar observation without objective front filter. Non-ageing sealed coating edges.

Telecentric systems are mainly used in H-alpha filters for solar observation, where the 1/100 lambda plane-parallel etalon in the H-alpha filter requires a perfectly parallel beam of light over the entire image.

Baader H-alpha/O-III/S-II Narrowband Filterset – Precision Grade. 6.5 nm FWHM, recommended for optical systems from f/10 to f/3.5

These Baader colour filters are carefully prepared for amateur astronomical use for contrast enhancement of lunar and planetary observations.